The nitrous oxide cylinder at the end of the episode is marked N²O. Chemical formulas use subscript for numbers, at least nowadays (the original Berzeluis notation used superscript and was still used during the first half of the 20th century). See more
Oh, man. I have to go to the bathroom. Why did I have all that beer and coffee and watermelon?
Now Homer, I know what you're thinking, and I want to take the pressure off. It doesn't take a whiz to see that you're looking out for Number One.
[as he speaks, there is a leaky pipe dripping in the background, and Smithers pours him coffee from a pot with a long spout
Well, listen to me, and you'll make a big splash very soon!
[...] See more